US3315145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inverter with improved commutation operation
Assignee: International Business Machines Corp
•
Filing: 1964-07-06
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Granted: 1967-04-18
•
Expires: 1984-07-06
Abstract
No abstract record available.
Inventors
- 👤 Edward A Menard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:20
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/5157; H02M7/5152; H02M7/5155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
AN IMPROVED INVERTER CIRCUIT COMPRISING POWER SOURCE MEANS HAVING FIRST, SECOND AND THIRD TERMINALS, THE POTENTIAL AT SAID FIRST TERMINAL BEING POSITIVE WITH RESPECT TO THE POTENTIAL AT SAID SECOND TERMINAL AND THE POTENTIAL AT SAID SECOND TERMINAL BEING POSITIVE WITH RESPECT TO SAID THIRD TERMINAL, FIRST AND SECOND CIRCUIT POINTS, LOAD MEANS CONNECTED BETWEEN SAID SECOND TERMINAL AND SAID FIRST CIRCUIT POINT, FIRST AND SECOND CONTROLLED RECTIFIER MEANS CONNECTED FOR FORWARD CONDUCTION FROM SAID FIRST TERMINAL TO SAID FIRST CIRCUIT POINT AND FROM SAID FIRST CIRCUIT POINT TO SAID THIRD TERMINAL RESPECTIVELY, CAPACITOR MEANS CONNECTED BETWEEN SAID FIRST AND SECOND CIRCUIT POINTS,
Claim 2
Dependent Claim
103 words
AN IMPROVED INVERTER CIRCUIT COMPRISING POWER SOURCE MEANS HAVING FIRST, SECOND AND THIRD TERMINALS, THE POTENTIAL AT SAID FIRST TERMINAL BEING POSITIVE WITH RESPECT TO THE POTENTIAL AT SAID SECOND TERMINAL AND THE POTENTIAL AT SAID SECOND TERMINAL BEING POSITIVE WITH RESPECT TO SAID THIRD TERMINAL, FIRST AND SECOND CIRCUIT POINTS, LOAD MEANS CONNECTED BETWEEN SAID SECOND TERMINAL AND SAID FIRST CIRCUIT POINT, FIRST AND SECOND CONTROLLED RECTIFIER MEANS CONNECTED FOR FORWARD CONDUCTION FROM SAID FIRST TERMINAL TO SAID FIRST CIRCUIT POINT AND FROM SAID FIRST CIRCUIT POINT TO SAID THIRD TERMINAL RESPECTIVELY, CAPACITOR MEANS CONNECTED BETWEEN SAID FIRST AND SECOND CIRCUIT POINTS,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |